The centrepiece of the ruins is a 66cm-wide wall and part of a rounded apse. Another room and a fitting that could be the foundation of an altar were also uncovered. Archaeologists said the shape of the wall clearly suggested it had been a church.
Judging from the ruins, the former church was estimated to be 6.5 metres wide and seven metres long. A wooden building was also found on the site.
The church is believed to originate from the Middle Ages but a more specific date is not known.
Moutier itself dates back to the Middle Ages and has a monastery from the year 640, one of the oldest in Switzerland.
Source: Swiss info